An efficient synthesis of pyrido[2,3-<i>d</i>]pyrimidine derivatives in ionic liquid
作者:Da-Qing Shi、Yao Zhou、Hai Liu
DOI:10.1002/jhet.281
日期:——
A series of 5,7-diarylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-diones was synthesized via the reaction of 6-aminopyrimidine-2,4-dione and α,β-unsaturated ketones in ionic liquid without using any catalyst. This protocol has the advantages of easier work-up, milder reaction conditions, high yields, and environmentally benign procedure over traditional methods. J. Heterocyclic Chem., 2010.
通过6-氨基嘧啶-2,4-二酮与α,β-不饱和基的反应合成了一系列的5,7-二芳基吡啶并[2,3- d ]嘧啶-2,4(1 H,3 H)-二酮。无需使用任何催化剂的离子液体中的酮。与传统方法相比,该方案具有易于处理,反应条件温和,收率高和对环境有益的优点。J.杂环化学.2010。